Typical External Alarm Relay 1 Wiring

Jumper the ‘Neutral’ line of an external power source or the monitor’s AC input to the ‘Common’ terminals on the relay connector.

Connect one end of the strobe or horn to the ‘NO’ terminal of whichever level of alarm is appropriate for the application.

The other end of the strobe or horn is connected to the other leg of the external power source. For protection, install an in-line fuse of the appropriate size and design for the external alarm device being used.

4–20 mA Current Loop Interface

An external 4−20 mA monitoring device (e.g., chart recorder) can be connected to the HGMSZ using a shielded-twisted-pair cable. Use any of the service knockouts to gain access to the interior of the monitor. Locate the 4−20 mA connector (Page 8), remove it from the circuit board, and then remove the resistor or shorting wire from its terminals.

IMPORTANT! The monitoring device must be isolated from ground (floating).

NOTE: A 100 ohm, ¼ W resistor must be connected to the 4–20 mA connector if no external monitoring device is used. Failure to install this resistor will cause loop-fault code 0010 to occur (Page 19).

Secure the wire leads from the external monitoring device to the 4−20 mA connector as shown in the diagram below, making sure that the polarity at this connector matches the wiring at the monitoring device. When you are through securing the connections, carefully plug the connector back onto the circuit board.

The default current-to-ppm factor is set to 0.016 mA = 1 ppm, providing a measurement range of 0 ppm (4 mA) to 1,000 ppm (20 mA). Note that the current-to-ppm factor can be changed using the monitor’s LOOP function (Page 16).

To facilitate loop zero and span checking, note that when the LOOP function is selected the loop output is set to 20 mA, and upon exiting this function the loop output is set to 4 mA.

4–20 mA Current Loop Connector

CAUTION: Never apply power to the 4–20 mA Current Loop Connector from an external power supply. Connect only a load resistor and/or a floating measurement device.

Instruction 3015-4256

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Bacharach 3015-4256 manual MA Current Loop Interface, Typical External Alarm Relay 1 Wiring
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3015-4256 specifications

Bacharach 3015-4256 is a highly regarded integrated air quality monitor designed for both commercial and residential applications. This advanced device focuses on detecting and analyzing various air pollutants, ensuring that indoor environments remain healthy and safe for occupants. Its sleek, compact design allows for easy integration into any space, making it an ideal choice for those looking to enhance air quality without compromising aesthetics.

One of the standout features of the Bacharach 3015-4256 is its advanced sensor technology. Equipped with multiple sensors, it can accurately measure levels of carbon dioxide, volatile organic compounds, particulate matter, and humidity. This multi-faceted approach to air quality monitoring ensures comprehensive data collection, allowing users to assess and understand their indoor environment better. The sensors undergo rigorous calibration to maintain accuracy over time, which is critical for effective air quality management.

Another key characteristic of the Bacharach 3015-4256 is its real-time data reporting capabilities. The device continuously monitors air quality levels and provides instant feedback through an easy-to-read display. Users can view real-time updates on air quality metrics, helping them make informed decisions about ventilation and air purification needs. Additionally, the monitor can connect to a mobile app, enabling users to access data remotely, set alerts for specific pollutant levels, and track changes over time.

Safety and user-friendliness are central to the design of this air quality monitor. The device features simple installation guidelines, requiring minimal setup to start monitoring air quality effectively. It also incorporates user-friendly controls, allowing individuals to navigate through settings and features with ease.

Moreover, the Bacharach 3015-4256 is designed with energy efficiency in mind. It operates on low power consumption, making it not only cost-effective but also environmentally friendly.

In summary, the Bacharach 3015-4256 is a sophisticated air quality monitor that offers advanced sensor technology, real-time data reporting, ease of use, and energy-efficient design. Its blend of performance and practicality makes it a valuable tool for anyone committed to maintaining a healthy indoor environment.
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